Forms structure, panel support member, panel support member for internal corner, panel support member for external corner and construction method of forms

ABSTRACT

A forms structure, a panel support member, a panel support member for internal corner, a panel support member for external corner, and a construction method of forms capable of realizing such features as enhancing safety in transportation work and assembling work through reduction in the number of components and compact unitization, eliminating lack of experience and shortening the assembling work by eliminating the fastening work by form tie or the boring work of a forms panel, preventing a crack in a concrete wall from expanding by narrowing the interval between induction joints, and concealing a P cone removing hole remaining due to the induction joint. The forms structure comprises forms panels  2  arranged oppositely, panel support members  3  which are erected on the opposite sides of the forms panel  2  in order to support the forms panel  2,  a horizontal member  7  supported at the outer side face of the panel support member  3  while spaced apart by a predetermined distance from the forms panel  2,  and a wedge member  8  inserted between the horizontal member  7  and the forms panel  2  and securing the forms panels  2  by pressing it against the panel support member  3.

TECHNICAL FIELD

The present invention relates to a forms structure, a panel supportmember, a panel support member for internal corner, a panel supportmember for external corner and a construction method of forms suitablefor use in constructing forms to cast concrete.

BACKGROUND OF THE ART

In conventional inventions, forms structures for casting concrete areproposed, as disclosed in e.g. Japanese Examined Utility Model(Registration) Application Publication No. 54-15946, mainly includingform plates disposed oppositely, a separator which maintains an intervalbetween the form plates, engaging members (P cones) disposed at bothends of the separator via a connecting shaft, form plate clamps (formties) to be screwed into the connecting shaft, vertical battens whichabut on an outer surface of each form plate, horizontal battens whichabut on the vertical batten and a wedge to be hit into a hole of theform plate clamp to secure each batten (see Patent Document 1).

Patent Document 1: Japanese Examined Utility Model (Registration)Application Publication No. 54-15946

DISCLOSURE OF THE INVENTION Problem to be Solved

However, conventional forms structures, as in the invention described inPatent Document 1 and the like, involve vertically and horizontallydisposing a combination of a plurality of long battens consisting ofsteel pipes, etc. and fastening them with a form tie to secure a formplate. Therefore, transportation of such many battens causes significantproblems of enormous work and costs, as well as arduous on-site handlingin a small construction site and even injuries to workers.

In addition, a form plate must normally be provided with a hole to bebored which penetrates one end of a separator, resulting in a long-timeboring work and failure of a forms panel due to its decreased strength.Also, fastening work with a form tie usually requires technicalexperience and long construction duration, leading to insufficientnumber of skilled workers in construction sites and delay inconstruction schedule and higher construction costs.

It is also indicated that a completed concrete presents a removing hole,i.e. a mark of a washer by fastening the concrete with a P cone, leadingto a poor appearance.

The concrete wall is provided with an induction joint at which crack isconcentrated to prevent it from expanding. An induction joint formedwithin the boundary between the form plates is made at a much longerinterval from another induction joint according to conventionaltechnical standards, which contribute to the generation of additionalcrack therebetween on the concrete wall.

To solve the aforementioned problems, it is, therefore, one object ofthe present invention to provide a forms structure, a panel supportmember, a panel support member for internal corner, a panel supportmember for external corner, and a construction method of forms capableof realizing such features as enhancing safety in transportation workand assembling work through reduction in the number of components andcompact unitization, eliminating lack of experience and shortening theassembling work by eliminating the fastening work by form tie or theboring work of a forms panel, preventing a crack in a concrete wall fromexpanding by narrowing the interval between induction joints, andconcealing a P cone removing hole remaining due to the induction joint.

Means for Solving the Problem

A forms structure according to the present invention comprising a formspanel disposed to intercept concrete, a panel support member erected onboth sides of the forms panel in order to support the forms panel, ahorizontal member supported at an outer side face of the panel supportmember at a plurality of upper and lower portions thereof while spacedapart by a predetermined distance from the forms panel, and a wedgemember inserted between the horizontal member and said forms panel andsecuring the forms panel by pressing it against said panel supportmember.

A panel support member according to the present invention comprising aforms structure as set forth in Claim 1, furthermore comprising an innerwall surface part facing the inside of said forms structure, an outerwall surface part provided in substantially parallel with the inner wallsurface part while spaced apart by a predetermined distance therefrom, ahorizontal member supporting part provided at a plurality of upper andlower portions of the outer wall surface part to support one end of saidhorizontal member, and a panel holding part provided at both end sideparts of said inner wall surface part to sandwich said forms panel withsaid wedge member.

A panel support member for internal corner according to the presentinvention mutually orthogonally supporting a forms panel disposed at aninternal corner comprising a forms structure as set forth in Claim 1,furthermore comprising a first inner wall surface part and a secondinner wall surface part mutually orthogonally connected at an internalcorner of said forms structure to form a convex inner wall surfaceinside the forms structure, a first outer wall surface part provided insubstantially parallel with said first inner wall surface part whilespaced apart by a predetermined distance therefrom, a second outer wallsurface part provided in substantially parallel with said second innerwall surface part while spaced apart by a predetermined distancetherefrom, a first horizontal member supporting part provided at aplurality of upper and lower portions of said first outer wall surfacepart to support one end of said horizontal member, a second horizontalmember supporting part provided at a plurality of upper and lowerportions of said second outer wall surface part to support one end ofsaid horizontal member and a panel holding part provided at each outsideend of said first inner wall surface part and said second inner wallsurface part to sandwich said forms panel with said wedge member

Also, a panel support member for external corner according to thepresent invention mutually orthogonally supporting a forms paneldisposed at an external corner comprising a forms structure as set forthin Claim 1, furthermore comprising a first inner wall surface part and asecond inner wall surface part mutually orthogonally connected at anexternal corner of said forms structure to form a concave inner wallsurface inside the forms structure, a first outer wall surface partprovided in substantially parallel with said first inner wall surfacepart while spaced apart by a predetermined distance therefrom, a secondouter wall surface part provided in substantially parallel with saidsecond inner wall surface part while spaced apart by a predetermineddistance therefrom, a first horizontal member supporting part providedat a plurality of upper and lower portions of said first outer wallsurface part to support said horizontal member, a second horizontalmember supporting part provided at a plurality of upper and lowerportions of said second outer wall surface part to support saidhorizontal member and a panel holding part provided at each outside endof said first inner wall surface part and said second inner wall surfacepart to sandwich said forms panel with said wedge member.

Preferably in this invention, when forms panels are disposed oppositely,a separator which maintains an interval between panel support memberserected on both sides of the forms panel and mutually oppositelydisposed is provided, a cone member is provided at one end of theseparator, a joint bar is disposed at upper and lower portions of thecone member to form an induction joint, and a truncated quadrangularpyramidal cone cover having the substantially same section as the jointbar is coated on said cone member.

A construction method of forms according to the present invention tosupport a forms panel to intercept concrete by panel support members,comprising the steps of: erecting said panel support members whilespaced apart by a predetermined distance from each other and disposingsaid forms panel therebetween;

supporting a horizontal member at an outer side face of said panelsupport members by a horizontal member supporting part while spacedapart by a predetermined distance from said forms panel; and

pressing and securing the forms panel to said panel support members byinserting a wedge member between the horizontal member and said formspanel.

ADVANTAGEOUS EFFECT OF THE INVENTION

Accordingly, it is, of course, that this invention is capable ofrealizing such features as enhancing safety in transportation work andassembling work through reduction in the number of components andcompact unitization, eliminating lack of experience and shortening theassembling work by eliminating the fastening work by form tie or theboring work of a forms panel, preventing a crack in a concrete wall fromexpanding by narrowing the interval between induction joints, andconcealing a P cone removing hole remaining due to the induction joint.

BEST MODE FOR CARRYING OUT THE INVENTION

A first embodiment of a forms structure, a panel support member, a panelsupport member for internal corner, a panel support member for externalcorner and a construction method of forms according to the presentinvention will be described with reference to the drawings.

FIG. 1 is a plan view indicative of the forms structure 1 of this firstembodiment. FIGS. 2 and 3 are perspective views in the forms structure 1of this first embodiment, indicative of an internal corner externallyviewed and an external corner internally viewed, respectively.

As shown in FIGS. 1 to 3, the forms structure 1 of this first embodimentmainly includes a forms panel 2 to intercept concrete, a panel supportmember 3, a panel support member for internal corner 4, a panel supportmember for external corner 5 to support the forms panel 2, a separator 6which maintains an interval between oppositely disposed panel supportmembers 3, a horizontal member 7 supported at an outer side face of thepanel support member 3 and a wedge member 8 inserted between thehorizontal member 7 and said forms panel 2.

Each component of this embodiment will be described in detail asfollows. The forms panel 2 plays a role in intercepting concrete cast.In this first embodiment, the forms panel 2, as shown in FIG. 4, isformed of a plywood, composed of 3 panels press-fitted with an adhesiveagent. A middle panel therein is formed with shorter length in the topand bottom than the other two panels, and up and down edges of the formspanel 2 are provided with recessed grooves 21. Thus, in this firstembodiment, when forms panels 2 are disposed in vertically pluralstages, as shown in FIG. 4, a limewash stop member 22, having a lengthidentical to a width of the forms panel 2, is fitted into recessedgrooves 21 of upper and lower forms panels 2, thereby preventing flow ofcast concrete.

The forms panel 2 may be a wooden board like veneer, a resin board liketransparent acrylic board, a steel plate, an aluminum plate and thelike, as long as it plays a role in intercepting concrete. In this firstembodiment, concrete-cast surface is formed of a concrete panel coatedwith urethane so as to provide a good appearance thereon, with other 2panels from recycled veneer, leading to efficient use of wood resources.In lieu of 3 panels, the forms panel 2 may be formed of one panel havingrecessed grooves 21.

The separator 6 plays a role in fastening panel support members 3, 3oppositely disposed inside and outside to maintain a predetermineddistance therebetween. In this first embodiment, the separator 6 isformed of a rod-like shape by a steel material, etc., and both endsthereof are provided with a male screw 61. Also, a cone member 62 formedof a truncated cone from plastics, etc., is secured to both ends of theseparator 6. The cone member 62 is provided with a female screw hole 63which axially screws into the male screw 61 of the separator 6. Aconnecting bolt 64 is externally screwed into the female screw hole 63to mount the separator 6.

In this first embodiment, as shown in FIG. 3, upper and lower portionsof the cone member 62 are provided with a joint bar 9 to form aninduction joint. The joint bar 9 is formed of substantially trapezoidalsection to be readily removed after concrete cures. Since the inductionjoint is prone to stress and crack concentration generated in a concretewall, an effect of preventing crack on a finished surface can beexpected.

Additionally, in this first embodiment, a substantially truncatedquadrangular pyramidal cone cover 10 is externally covered on each conemember 62. The cone cover 10, as shown in FIG. 5, is formed so as tohave a width identical to the joint bar 9 to mold part of the inductionjoint with the joint bar 9. Therefore, a removing hole of the conemember 62 becomes part of the induction joint, and it is not necessaryto fill the removing hole with a filler and the like, thereby improvingan appearance of the finished surface.

The horizontal member 7 and the wedge member 8 play a role in pressingand securing the forms panel 2 to the panel support member 3. In thisfirst embodiment, the horizontal member 7 is formed of a square pipe ofsubstantially rectangular section, having a longer length than aninterval between adjacent panel support members 3. The horizontal member7 is supported at an outer side face of the panel support member 3 at aplurality of upper and lower portions thereof while spaced apart by apredetermined distance from the forms panel 2.

The wedge member 8 made of wood, etc. is formed, by inserting into aspace between the horizontal member 7 and the forms panel 2 to applypressing force to the forms panel 2. In this first embodiment, as shownin FIG. 6, the wedge member 8 has a tapered part 81 for smoothattachment and a stopper part 82 for preventing detachment of thehorizontal member 7.

The panel support members 3, the panel support members for internalcorner 4 and the panel support members for external corner 5 are erectedwith a predetermined distance therebetween to support the forms panels2. In this first embodiment, the panel support member 3 supportsadjacent forms panels 2 almost in the same plane, and the panel supportmember for internal corner 4 mutually orthogonally supports the formspanels 2 disposed at an internal corner of the forms structure 1. Thepanel support member for external corner 5 mutually orthogonallysupports the forms panels 2 disposed at an external corner of the formsstructure 1.

As shown in FIGS. 1 to 3, the panel support member 3, which is formed ofsubstantially H-shaped section from a steel material, an aluminummaterial, etc., mainly includes an inner wall surface part 31 facing theinside of the forms structure 1, an outer wall surface part 32 facingthe outside of the forms structure 1 while spaced apart by apredetermined distance from the inner wall surface part 31, a throughhole 33 bored from the inner wall surface part 31 through the outer wallsurface part 32, a horizontal member supporting part 34 provided on theouter wall surface part 32 and a panel holding part 35 formed at bothend side parts of the inner wall surface part 31.

Each component of the panel support member 3 will be described asfollows. The inner wall surface part 31 and the outer wall surface part32 are formed in a flat plate shape, and substantially middle parts ofboth thereof are connected by a plate-shaped connecting plate 36. Theconnecting plate 36 connects the inner wall surface part 31 and theouter wall surface part 32, both of which are disposed substantially inparallel with each other, at a longer interval than a thickness of theforms panel 2. As a result, parts of the inner wall surface part 31extended to both end side parts thereof can engage with the forms panel2 pressed by the wedge member 8, thereby providing a function as thepanel holding part 35 of this first embodiment.

The through hole 33 penetrates a connecting bolt 64 screwed into thecone member 62 provided at one end of the separator 6. This invention isnot particularly limited to this first embodiment where the through hole33 passes from the inner wall surface part 31 through the outer wallsurface part 32 via the connecting plate 36 as shown in FIG. 1. However,the through hole 33 may be bored only at the inner wall surface part 31and the outer wall surface part 32 not through the connecting plate 36,as long as it passes from the inner wall surface part 31 through theouter wall surface part 32.

The horizontal member supporting part 34 supports the horizontal member7 while spaced apart by a predetermined distance from the forms panel 2.In this first embodiment, the horizontal member supporting part 34 isformed of a square pipe, having an insertion hole 34 a whose length andwidth are greater than those of a section of the horizontal member 7. Asshown in FIGS. 2 and 3, the horizontal member supporting part 34 iswelded to the outer wall surface part 32 so that the axial direction ofthe insertion hole 34 a is orthogonal to the longitudinal direction ofthe panel support members 3 to support one end of the horizontal member7. In this first embodiment, the horizontal member supporting parts 34are provided with a upper stage, a middle stage and a lower stage of thepanel support members 3 to determine a holding position of the formspanel 2.

In this first embodiment, when the panel support members 3 arevertically connected, a pair of connecting pieces 37,37 formed of a flatplate are used. Specifically, as shown in FIG. 7, after the connectingpieces 37,37 have been screwed into a connecting plate 36 of one panelsupport member 3 in a holding manner, a connecting plate 36 of the otherpanel support member 3 is inserted into a space between the connectingpieces 37,37 to be screwed. Thus, each panel support member 3 can bereadily and safely connected.

Next, the panel support member for internal corner 4 supports the formspanels 2 disposed at an internal corner of the forms structure 1, mainlyincluding a first inner wall surface part 41 a and a second inner wallsurface part 41 b forming an inner wall surface at an internal corner ofthe forms structure 1, a first outer wall surface part 42 a and a secondouter wall surface part 42 b provided in substantially parallel with thefirst inner wall surface part 41 a and the second inner wall surfacepart 41 b while spaced apart by a predetermined distance therefrom,respectively, a first through hole 43 a and a second through hole 43 bbored from the first inner wall surface part 41 a and the second innerwall surface part 41 b through the first outer wall surface part 42 aand the second outer wall surface part 42 b, respectively, a firsthorizontal member supporting part 44 a and a second horizontal membersupporting part 44 b provided at the first outer wall surface part 42 aand the second outer wall surface part 42 b, respectively, and a panelholding part 45 formed at each outside end of the first inner wallsurface part 41 a and the second inner wall surface part 41 b.

The first inner wall surface part 41 a and the second inner wall surfacepart 41 b, as shown in FIG. 1, are mutually orthogonally connected atthe internal corner to form a convex inner wall surface inside the formsstructure. Then, panel holding parts 45,45 are extended at each outsideend of the first inner wall surface part 41 a and the second inner wallsurface part 41 b along each inner wall surface. Therefore, one formspanel 2 supported by the panel holding part 45 of the first inner wallsurface part 4 la and the other forms panel 2 supported by the panelholding part 45 of the second inner wall surface part 41 b areorthogonal to each other.

The first outer wall surface part 42 a and the second outer wall surfacepart 42 b, like the above-described outer wall surface part 32, areprovided in substantially parallel with the first inner wall surfacepart 41 a and the second inner wall surface part 41 b via the connectingplate 36, respectively. Thus, the panel support member for internalcorner 4 of this first embodiment, as shown in FIG. 1, is formed ofsubstantially particular Japanese Kanji character (representing a squareand a cross therein). A detailed description is not provided regardingthe first through hole 43 a and the second through hole 43 bcorresponding to the above-described through hole 33, and the firsthorizontal member supporting part 44 a and the second horizontal membersupporting part 44 b corresponding to the above-described horizontalmember supporting part 34.

The panel support member for external corner 5 supports the forms panel2 disposed at an external corner of the forms structure 1, mainlyincluding a first inner wall surface part 51 a and a second inner wallsurface part 51 b forming an inner wall surface at an external corner ofthe forms structure 1, a first outer wall surface part 52 a and a secondouter wall surface part 52 b provided in substantially parallel with thefirst inner wall surface part 51 a and the second inner wall surfacepart 51 b while spaced apart by a predetermined distance therefrom,respectively, a first through hole 53 a and a second through hole 53 bbored from the first inner wall surface part 5 la and the second innerwall surface part 51 b through the first outer wall surface part 52 aand the second outer wall surface part 52 b, respectively, a firsthorizontal member supporting part 54 a and a second horizontal membersupporting part 54 b provided at the first outer wall surface part 52 aand the second outer wall surface part 52 b, respectively, and a panelholding part 55 at each outside end of the first inner wall surface part51 a and the second inner wall surface part 51 b.

Specifically, as shown in FIG. 1, the panel support member for externalcorner 5 is formed of two above-described panel support members 3orthogonally joined at one end of an inner wall surface part 31 of onepanel support member 3 and one end of an inner wall surface part 31 ofthe other panel support member 3. The first inner wall surface part 51 aand the second inner wall surface part 51 b are mutually orthogonallyconnected at an external corner to form a concave inner wall surfaceinside the forms structure. Then, a panel holding parts 55 is formed ateach outside end of the first inner wall surface part 51 a and thesecond inner wall surface part 51 b along each inner wall surface.Therefore, one forms panel 2 supported by the panel holding part 55 ofthe first inner wall surface part 51 a and the other forms panel 2supported by the panel holding part 55 of the second inner wall surfacepart 51 b are orthogonal to each other.

A detailed description is not provided regarding other componentscorresponding to the above-described panel support members 3 or thepanel support member for internal corner 4.

Next, operations of the forms structure 1, the panel support member 3,the panel support member for internal corner 4 and the panel supportmember for external corner 5, and the construction method of forms ofthis first embodiment having the above components will be described withreference to the drawings.

Firstly, a use of the panel support member 3, the panel support memberfor internal corner 4 and the panel support member for external corner 5of this first embodiment constructs the forms structure 1 of this firstembodiment. In this case, the panel support member for internal corner 4is erected at an internal corner and the panel support member forexternal corner 5 is erected at an external corner. In other places, thepanel support member 3 is erected so that the inner wall surface part 31internally faces the forms structure 1. Adjacent panel support members 3are erected while spaced apart by a predetermined distance so that aninterval between the panel holding parts 35 thereof is shorter than awidth of the forms panel 2.

Next, when each of panel support members 3 is lower than a requiredheight of a desired forms structure 1, a plurality of panel supportmembers 3 must be vertically connected. In this case, while a pair ofconnecting pieces 37,37 are secured to an upper end of one panel supportmember 3, a connecting plate 36 of the other panel support member 3 isinserted into a space between the connecting pieces 37,37 to be secured.The connecting pieces 37,37 hold the connecting plate 36 of the panelsupport member 3 inserted to prevent the panel support members 3 fromtumbling down, thereby achieving operational safety.

Like the panel support members 3, the panel support members for internalcorner 4 and the panel support members for external corner 5 arevertically connected. Since a connecting plate 36 is concealed in thepanel support member for internal corner 4, connecting pieces 37,37 areadditionally secured to the first outer wall surface part 42 a and thesecond outer wall surface part 42 b.

Subsequently, forms panels 2 are disposed between adjacent panel supportmembers 3,3. Since the forms panels 2 are externally mounted with eachof panel holding parts 35,35, the panel holding parts 35,35 are designedto hold both end edge parts of the forms panel 2 to prevent them frominternally tumbling down. Likewise, forms panels 2 are disposed betweenthe panel support member for internal corner 4 and its 2 adjacent panelsupport members 3,3 in the direction orthogonal thereto, and between thepanel support member for external corner 5 and its 2 adjacent panelsupport members 3,3 in the direction orthogonal thereto.

Here, when each of forms panels 2 is lower than a required height of adesired forms structure 1, a limewash stop member 22 is fitted into arecessed groove 21 of an upper end of one forms panel 2, into which arecessed groove 21 of a lower end of the other forms panel 2 is fittedto be connected. By this operation, the limewash stop member 22 preventscast concrete from infiltrating into a connecting part between upper andlower forms panels 2 and coming out of the surface.

Next, a separator 6 is disposed between panel support members 3,3oppositely disposed. Specifically, by adjusting a position of a conemember 62 provided at both ends of the separator 6, the separator 6 issecured so as to make a predetermined distance between outer end facesof the cone members 62. Then, the separator 6 is disposed so that theouter end faces abut on each of inner wall surface parts 31 of the panelsupport members 3, and a connecting bolt 64 penetrated in each throughhole 33 is screwed into a female screw hole 63 of each cone member 62.

As shown in FIG. 2, a nut 66 is fastened via a washer 65 to one end ofthe connecting bolt 64 protruding from an outer wall surface part 32 ofthe panel support member 3. Then, an interval between panel supportmembers 3,3 disposed oppositely is maintained at a predetermineddistance in an easy and ensured manner, thereby requiring no fasteningwork by form tie, batten, etc. Likewise, separators 6 are disposedbetween oppositely disposed panel support members 3, panel supportmembers for internal corner 4 and panel support members for externalcorner 5 to maintain a predetermined distance therebetween.

In this first embodiment, a cone cover 10 is coated on each cone member62, and a joint bar 9 is disposed on upper and lower portions of thecone cover 10. In this case, upper and lower end faces of the cone cover10 formed in a flat plate provide an easy positioning of an end of thejoint bar 9 and a continuous configuration thereof. Subsequently, aremoving hole of the cone member 62 is concealed within an inductionjoint, resulting in no such mark on a finished surface of a concretewall. Also, it is not necessary to fill the removing hole with a filler,etc. Crack can be concentrated only at the induction joint formed,thereby preventing the crack from expanding to the finished surface.

Next, horizontal member supporting parts 34,34 of adjacent panel supportmembers 3,3 are inserted into one end of the horizontal member 7 and theother end of the horizontal member 7. As a result, the horizontal member7 is substantially horizontally supported outside of the forms panels 2while spaced apart by a slight interval. The panel support members 3 arealigned in a correct straight line by the horizontal member 7. Viewed atthe internal corner and external corner, panel support members 3, whichare each adjacent to the panel support member for internal corner 4 andthe panel support member for external corner 5, are alignedsubstantially in the direction orthogonal thereto.

A wedge member 8 is hit into a space between the horizontal member 7 andthe forms panel 2. Therefore, the wedge member 8 internally presses anouter surface of the forms panel 2, which is received by a panel holdingpart 35, thereby sandwiching the forms panel 2 between the wedge member8 and the panel holding part 35 to be secured. Thus, concrete can becast between forms panels 2 oppositely secured.

From the above description of this first embodiment, the followingadvantages can be obtained.

-   1. The forms structure 1 can be constructed in an easy and swift    manner without specific skills and training.-   2. With no use of a plurality of battens and reduction in the number    of components, the forms panels 2 can be firmly secured.-   3. Fastening work by form tie and boring work on forms panels 2 are    not required, resulting in shortening construction period and    reducing construction costs.-   4. By the compact unitization of each component, the safety of    transportation and assembling work can be enhanced.-   5. Working hours and thus construction costs can be reduced.-   6. A removing hole of the cone member 62 can be concealed in an    induction joint.-   7. Crack expansion in a concrete wall can be prevented.

Next, a second embodiment of a forms structure 11, a panel supportmember 13, a panel support member for internal corner 14, a panelsupport member for external corner 15 and a construction method of formsaccording to the present invention will be described. A detaileddescription is not provided regarding components of this secondembodiment whose construction is equivalent or corresponding to theabove-described first embodiment, using the same signs.

The forms structure 11 of this second embodiment is characterized by, asshown in the above-described first embodiment, not holding oppositelydisposed forms panels 2 by a tensional operation of the separator 6, butas shown in FIG. 8, externally pressing and supporting oppositelydisposed forms panels 2 on a wall surface like a cliff and a slantsurface by a support member 16.

Specifically, a vertical member 12 vertically erected abuts at an outerside face of each horizontal member 7 of the forms structure 11. Thesupport member 16 is provided to press the vertical member 12 againstthe horizontal member 7. The support member 16 is designed to beslidably assembled and formed of two steel pipes having differentdiameters to be secured by a predetermined length in an adjustmentrange. Therefore, when one end of the support member 16 abuts on avertical member 12, and the other end thereof abuts on a differentstructure to install the support member 16, the forms panel 2 can beexternally pressed and supported via the horizontal member 7 and thewedge member 8.

Since the forms structure 11 of this second embodiment doesn't require aseparator 6, the panel support member 13, the panel support member forinternal corner 14 and the panel support member for external corner 15require no such through holes 33,43,53 described above. As for a jointbar 9 additionally mounted, it is not necessary to cut the joint bar 9in accordance with the shape of the cone cover 10 because it includes nocone member 62. Wherever the joint bar 9 is mounted, a removing hole ofthe cone member 62 cannot be produced.

According to the above second embodiment, the forms structure 11, onlycomposed of one side surface, can be readily constructed in addition tothe effect of the above-described first embodiment, resulting in animproved appearance of a concrete finished surface.

The forms structure 1,11, the panel support members 3,13, the panelsupport member for internal corner 4,14, the panel support member forexternal corner 5,15 and the construction method of forms according tothe present invention are not particularly limited to the aboveembodiments, but may be altered accordingly.

For example, the structure using no form tie is described in each of theabove embodiments, but this invention is not particularly limitedthereto. For example, when there are no panel support members 3oppositely disposed, forms panels 2 may be provided with a hole boredfor a separator and fastened by a form tie after vertical battens abuton the outside of the horizontal member 7, as in conventionalinventions.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a plan view indicative of a first embodiment of a formsstructure according to the present invention;

FIG. 2 is a perspective view indicative of an internal corner externallyviewed of a forms structure of this first embodiment;

FIG. 3 is a perspective view indicative of an external corner internallyviewed of a forms structure of this first embodiment;

FIG. 4 is a perspective view indicative of a forms panel of this firstembodiment;

FIG. 5 is an elevation view in (a) and a sectional view in 5B-5B in (b)indicative of a cone member and a cone cover of this first embodiment,respectively;

FIG. 6 is a perspective view indicative of a wedge member of this firstembodiment;

FIG. 7 is a perspective view indicative of a way a panel support memberis connected by a connecting piece of this first embodiment; and

FIG. 8 is a plan view indicative of a second embodiment of a formsstructure according to the present invention.

1. A forms structure, comprising: a forms panel disposed to interceptconcrete; a panel support member erected on both sides of the formspanel, the panel support member supporting the forms panel; a horizontalmember supported at an outer side face of the panel support member at aplurality of upper and lower portions thereof while spaced apart by apredetermined distance from said forms panel; and a wedge memberinserted between the horizontal member and said forms panel, the wedgemember securing the forms panel by pressing it against said panelsupport member.
 2. A panel support member comprising a forms structureas set forth in claim 1, furthermore comprising: an inner wall surfacepart facing the inside of said forms structure; an outer wall surfacepart provided in substantially parallel with the inner wall surface partwhile spaced apart by a predetermined distance therefrom; a horizontalmember supporting part provided at a plurality of upper and lowerportions of the outer wall surface part, the horizontal membersupporting part supporting one end of said horizontal member; and apanel holding part provided at both end side parts of said inner wallsurface part, the panel holding part sandwiching said forms panel withsaid wedge member.
 3. A panel support member for internal corner, thepanel support member for internal corner mutually orthogonallysupporting a forms panel disposed at an internal corner comprising aforms structure as set forth in claim 1, furthermore comprising: a firstinner wall surface part and a second inner wall surface part mutuallyorthogonally connected at an internal corner of said forms structure,the first inner wall surface part and the second inner wall surface partforming a convex inner wall surface inside the forms structure; a firstouter wall surface part provided in substantially parallel with saidfirst inner wall surface part while spaced apart by a predetermineddistance therefrom; a second outer wall surface part provided insubstantially parallel with said second inner wall surface part whilespaced apart by a predetermined distance therefrom; a first horizontalmember supporting part provided at a plurality of upper and lowerportions of said first outer wall surface part, the first horizontalmember supporting part supporting one end of said horizontal member; asecond horizontal member supporting part provided at a plurality ofupper and lower portions of said second outer wall surface part, thesecond horizontal member supporting part supporting one end of saidhorizontal member; and a panel holding part provided at each outside endof said first inner wall surface part and said second inner wall surfacepart, the panel holding part sandwiching said forms panel with saidwedge member.
 4. A panel support member for external corner, the panelsupport member for external corner mutually orthogonally supporting aforms structure disposed at an external corner comprising a formsstructure as set forth in claim 1, furthermore comprising: a first innerwall surface part and a second inner wall surface part mutuallyorthogonally connected at an external corner of said forms structure,the first inner wall surface part and the second inner wall surface partforming a concave inner wall surface inside the forms structure; a firstouter wall surface part provided in substantially parallel with saidfirst inner wall surface part while spaced apart by a predetermineddistance therefrom; a second outer wall surface part provided insubstantially parallel with said second inner wall surface part whilespaced apart by a predetermined distance therefrom; a first horizontalmember supporting part provided at a plurality of upper and lowerportions of said first outer wall surface part, the first horizontalmember supporting part supporting said horizontal member; a secondhorizontal member supporting part provided at a plurality of upper andlower portions of said second outer wall surface part, the secondhorizontal member supporting part supporting said horizontal member; anda panel holding part provided at each outside end of said first innerwall surface part and said second inner wall surface part, the panelholding part sandwiching said forms panel with said wedge member.
 5. Theforms structure as set forth in claim 1, wherein: when forms panels aredisposed oppositely, a separator which maintains an interval betweenpanel support members erected on both sides of the forms panel andmutually oppositely disposed is provided; a cone member is provided atone end of the separator; a joint bar is disposed at upper and lowerportions of the cone member, the joint bar forming an induction joint;and a truncated quadrangular pyramidal cone cover, having thesubstantially same section as the joint bar, is coated on said conemember.
 6. A construction method of forms, the construction method offorms supporting a forms panel to intercept concrete by panel supportmembers, comprising the steps of: erecting said panel support memberswhile spaced apart by a predetermined distance from each other anddisposing said forms panel therebetween; supporting a horizontal memberat an outer side face of said panel support members by a horizontalmember supporting part while spaced apart by a predetermined distancefrom said forms panel; and pressing and securing the forms panel to saidpanel support members by inserting a wedge member between the horizontalmember and said forms panel.